222 ALG.E CHLOROSPERME^:. {Chatophora. 



bristle; in allusion to the setaceous ramuli with swollen 



bases. 



1. B. setigera, Ag. Setigerous Bulbochate. Ag. Syst. 

 p. 123. Harv. in Hook. Br. Fl. v. ii. p. 350. Conf. vivipara, 

 Dillw. t. 59. 



On fresh water plants, in lakes, &c. About half an inch long-, 

 densely tufted, dull greenish-brown. 



60. DRAPARNALDIA. Bory. Draparnaldia. 



Filaments free, gelatinous ; stems subhyaline, emitting, at the 

 joints, pencils of coloured ramuli. Fructification not cer- 

 tainly known. Named in honour of J. P. JR. Draparnaud, a 

 French Naturalist. 



1. D. plumosa, Ag. Feathery Draparnaldia. Pencils of 

 ramuli linear-lanceolate, acute. Harv. in Hook. Br. FL v. ii. 

 p. 388. Conf. lubrica, E. Bot. t. 2087. 



In streams and wells. 



2. D. glomerata, Ag. Clustered Draparnaldia. Pencils of 

 ramuli ovate, obtuse, patent. Harv. in Hook. Br. Fl. v. ii. 

 p. 388 Conf. mutabilis, Dillw. t. 12. E. Bot. .1746. 



In streams and wells. This scarcely differs from the preceding. 



3. D. tenuis, Ag. Slender Draparnaldia. Ramuli simple, 

 subfasciculate ; primary filaments partially coloured. Harv. in 

 Hook. Br. Fl. v. ii. p. 388 Conf. lubrica, Dillw. t. 57. C. 

 protensa, Dillw. .67. 



In rivulets. This has quite the habit of Conferva, and very dif- 

 ferent, indeed, from that of the two former species. 



61. CHJETOPHORA. Ag. Chaetophora. 



Frond gelatinous, globose or lobed, rarely plane and crusta- 

 ceous, composed of numerous filaments aggregated together, 

 and issuing from a common base. Filaments articulated, 

 branched ; articulations of the branches subhyaline, those of 

 the ramuli coloured. Fructification: capsules attached to 

 the ramuli. Name ; x am 7> a bristle, and 0o/>eu>, to bear ; the 

 ramuli are, in some stage of growth, tipped with long seta- 

 ceous points or bristles. Fructification has only been disco- 

 vered on C. pisiformis and C. pellita. 



1. Grow in fresh water. 



1. C. endiviafolia, Ag. Stags-horn Chcetophora. Frond 

 elongated, filiform, somewhat compressed, subdichotomously 



